Commit a1ea0ca8 authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman
Browse files

powerpc/selftests: Use gettid() instead of getppid() for null_syscall 



gettid() is 10% lighter than getppid(), use it for null_syscall selftest.

Signed-off-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/0ad62673d3e063f848e7c99d719bb966efd433e8.1622809833.git.christophe.leroy@csgroup.eu
parent e2c04316

tools/testing/selftests/powerpc/benchmarks/null_syscall.c

+2 −1
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 
#include <time.h>

#include <sys/types.h>

#include <sys/time.h>

#include <sys/syscall.h>

#include <signal.h>



static volatile int soak_done;
@@ -121,7 +122,7 @@ static void do_null_syscall(unsigned long nr) 
	unsigned long i;



	for (i = 0; i < nr; i++)

		getppid();

		syscall(__NR_gettid);

}



#define TIME(A, STR) \